US4262913A - High pressure gland for optical fibres and/or electrical conductors - Google Patents

High pressure gland for optical fibres and/or electrical conductors Download PDF

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Publication number
US4262913A
US4262913A US06/071,469 US7146979A US4262913A US 4262913 A US4262913 A US 4262913A US 7146979 A US7146979 A US 7146979A US 4262913 A US4262913 A US 4262913A
Authority
US
United States
Prior art keywords
gland
bulkhead
tubular member
conductor
plastic material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US06/071,469
Other languages
English (en)
Inventor
Colin S. Parfree
Duncan A. Gunn
John C. Crownshaw
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STC PLC
Original Assignee
International Standard Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of US4262913A publication Critical patent/US4262913A/en
Assigned to STC PLC reassignment STC PLC ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: INTERNATIONAL STANDARD ELECTRIC CORPORATION, A DE CORP.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/26—Lead-in insulators; Lead-through insulators
    • H01B17/30—Sealing
    • H01B17/303—Sealing of leads to lead-through insulators
    • H01B17/306—Sealing of leads to lead-through insulators by embedding in material other than glass or ceramics
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/4415—Cables for special applications
    • G02B6/4427—Pressure resistant cables, e.g. undersea cables
    • G02B6/4428—Penetrator systems in pressure-resistant devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/013—Sealing means for cable inlets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/08—Cable junctions
    • H02G15/10—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes
    • H02G15/12—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes for incorporating transformers, loading coils or amplifiers
    • H02G15/14—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes for incorporating transformers, loading coils or amplifiers specially adapted for submarine cables

Definitions

  • This invention relates to high pressure glands for optical fibres and/or electrical conductors.
  • a transmission cable and amplifiers at spaced apart locations along the cable to amplify the information signals, thus compensating for the loss caused by the cable.
  • Such an amplifier is housed in a strong watertight housing and a bulkhead seals each end of the housing.
  • the cable passes through a gland in this bulkhead and the gland forms a watertight seal between the cable and the bulkhead.
  • the sealing of the cable to the bulkhead has been achieved by providing on the bulkhead an integral hollow castellated spigot, passing the cable through the hollow spigot and the bulkhead and moulding polyethylene around the spigot and the cable sheath.
  • the dielectric between the inner and outer conductor of the coaxial cable is formed of solid low-loss polythene, and in the event of a cable break adjacent the repeater, caused for example by a dragged ship anchor, the chance of water passing along the inside of the broken cable into the repeater is remote.
  • a high pressure gland for optical fibres and/or electrical conductors comprising a tubular strength member through which the fibres and/or conductors are loosely passed, the remaining space in the bore of the tube being filled with an encapsulating plastics material which adheres to both the wall of the bore and the fibres and/or conductors, the tube being adapted to be mechanically secured with pressure seals through an aperture in a bulkhead or the like, the gland being able to withstand a high axial pressure differential.
  • the tubular strength member comprises a first tubular part secured to and through a second tubular part with moulded plastics material, the second tubular part being adapted to be mechanically secured through the aperture.
  • a method of forming a high pressure gland for sealing and securing an optical fibre and/or electric conductor through an aperture in a bulkhead comprising providing a tubular strength member, feeding the optical fibres and/or electrical conductors through the member, introducing an encapsulating plastics material in the remaining space in the interior of the member which adheres to both the wall of the bore and the fibres and/or conductors and securing the member through the aperture in the bulkhead with pressure seals, the gland being such that it can withstand a high axial pressure differential.
  • FIG. 1 is a schematic cross-section through a high pressure gland according to one embodiment of the invention.
  • FIG. 2 is a cross-section through a high pressure gland according to another embodiment and adapted for use in a submersible repeater for an optical submarine telecommunication system.
  • the gland has a tubular strength member 1 for example made of copper, through which are passed the optical fibres or conductors 2.
  • the bore 3 of the member 1 is then filled with an encapsulating plastics material, such as an epoxy resin, which adheres to both the fibres/conductors and the bore wall.
  • the outer surface of the member 1 is shaped so that it can be mechanically secured and sealed in the bulkhead 4. Thus it is provided with annular shoulders 5 and grooves 6 which accommodate sealing rings 7,8.
  • One end of the member 1 is provided with a threaded portion 9 which engages a clamping nut 10.
  • the design of the gland results in the high axial fibre/conductor load generated by the hydrostatic stress being transferred to the wall of the surrounding member via the encapsulating material. This results in a component which is efficient in operation, does not affect optical fibre transmission and is cheap to manufacture.
  • the strength member can also be made of other materials, e.g. aluminium or steel.
  • the embodiment just described is a simplified arrangement for a submersible repeater although such details as provision for separate electric power transmission and strength members for protecting the fibres where they emerge have been omitted.
  • optical fibres 11 extend through an inner tubular part formed by a copper tube 13.
  • the remaining space in the bore of the copper tube is filled with an encapsulating plastics material 12, preferably a cold-setting resin.
  • the copper tube is sheathed in extruded plastics insulating material 14, preferably polyethylene.
  • the sheathed copper tube is secured through a second tubular part 15 by means of injection-moulded plastics material 14a, again preferably polythene, which forms a tapered moulded joint around a castellated tubular spigot 15a of the part 15.
  • the moulded plastics material also permeates the interstices between the plastics sheath 14 and an internal screw thread 14b of the part 14, thus forming a strong mechanical lock between the parts 13 and 15 able to withstand high axial forces.
  • the part 15 has annular grooves 16 housing O-ring seals and a radial flange 17. Part 15 is seated on a lead seal 18 on a shoulder 19 in an aperture 20 in a bulkhead 21.
  • a gland retaining ring 22 with clamping bolts 23 holds the gland in place and partially compresses the lead seal 18.
  • external water pressure will intensify the pressure on seal 18 at maximum sea depths, at pressures such as 1000 bar.
  • the end portion 24 of the sheathed tube 13 extends for about a meter to a point (not shown) where it is joined to an optical fibre tail cable extending from the main cable which is anchored (not shown) to the repeater housing (not shown). Alternatively it may be joined directly to the main cable.
  • the main cable will be prepared with a length (a few meters) of optical fibres extending from a smaller diameter tail, beyond a point at which the main cable will be anchored to the repeater.
  • the fibres will then be passed through the length of sheathed tubing (13,14) and the tubing connected to the end of the tail.
  • the part 15 will then be secured to the sheath 14 by an injection moulding process.
  • a predetermined quantity of cold-setting resin is injected into the bore of the tube 13 from its remaining open end (using for example a hyperdermic syringe) to fill the remaining space to a point just beyond the end of the tapered moulding 14a (arrows A--A).
  • the fibres are connected to a regenerator (amplifier) within the housing (not shown) and the gland is then secured and sealed to the bulkhead by means of the retaining ring 22, bolts 23, and the lead and elastomeric seals 18 and 16 respectively. This may be before or after the bulkhead 21 is secured and sealed in place in the housing.
  • the copper tube 13 carries electrical power for powering the repeater (termed a regenerator in an optical system) and would be connected to a power receiving/supplying lead inside the repeater.
  • the system could be bi-directional insofar as the optical information signals are concerned, but uni-directional for the electrical power supply.
  • the fibre coating may be necessary for the fibre coating to have some surface preparation to achieve the required bond strengths. In each case the nature of this surface treatment will depend upon the choice of the plastics encapsulant used.
  • the bore is relatively small (approximately 6 mm) and the length over which the epoxy resin extends is of the order of 15 cms.
  • the plastics insulation 14 has a diameter of about 12 mm.
  • the bulkhead 21 has a thickness of just under 10 cms.

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Installation Of Indoor Wiring (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
  • Cable Accessories (AREA)
US06/071,469 1978-09-07 1979-08-31 High pressure gland for optical fibres and/or electrical conductors Expired - Lifetime US4262913A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB35915/78 1978-09-07
GB7835915A GB2030011A (en) 1978-09-07 1978-09-07 High pressure gland for optical fibres and/or electrical conductors

Publications (1)

Publication Number Publication Date
US4262913A true US4262913A (en) 1981-04-21

Family

ID=10499502

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/071,469 Expired - Lifetime US4262913A (en) 1978-09-07 1979-08-31 High pressure gland for optical fibres and/or electrical conductors

Country Status (4)

Country Link
US (1) US4262913A (ja)
JP (1) JPS5812807B2 (ja)
FR (1) FR2435845A1 (ja)
GB (1) GB2030011A (ja)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4593175A (en) * 1985-02-13 1986-06-03 Ppg Industries, Inc. Electrical conduit with integral moisture-vapor barrier
US4761051A (en) * 1986-02-28 1988-08-02 Alcatel Cit Longitudinal sealing device for an optical cable core
US4819971A (en) * 1987-09-02 1989-04-11 Newport News Shipbuilding And Dry Dock Company Pressure vessel penetration fitting
US5301959A (en) * 1989-10-04 1994-04-12 British Telecommunications Public Limited Company Sealing gland
US5525759A (en) * 1994-04-19 1996-06-11 Salzman; Phil M. Pin-shaped feedthrough
US5861577A (en) * 1992-06-05 1999-01-19 Hitachi Construction Machinery Co., Ltd. Seal structure for member-passing-through hole bored in metal partition member
USRE36592E (en) * 1994-07-01 2000-02-29 Siecor Corporation Optical receiver stub fitting
US6305975B1 (en) * 2000-10-12 2001-10-23 Bear Instruments, Inc. Electrical connector feedthrough to low pressure chamber
US20050227535A1 (en) * 2004-04-09 2005-10-13 Siemens Information And Communication Networks, Inc. Cable sealing device
US20070204531A1 (en) * 2006-03-03 2007-09-06 Engineered Glass Products, Llc Heated insulating glass panel with a fitting
US20120112103A1 (en) * 2010-11-09 2012-05-10 Hamilton Sundstrand Corporation Seal assembly for metering valve
CN102823097A (zh) * 2010-01-29 2012-12-12 泰科电子瑞侃有限公司 线缆密封保持设备
CN102466075B (zh) * 2010-11-09 2016-12-14 精密工程控制有限公司 用于计量阀的密封组件
CN109428215A (zh) * 2017-08-30 2019-03-05 中国航发商用航空发动机有限责任公司 一种导线转接导管

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2035718B (en) * 1978-11-16 1982-11-03 Standard Telephones Cables Ltd Gland for coaxial cable
JPS57202154U (ja) * 1981-06-18 1982-12-23
JPS58215609A (ja) * 1982-06-08 1983-12-15 Mitsubishi Electric Corp 光ファイバケーブルの支持装置
FR2546308B1 (fr) * 1983-05-20 1986-08-01 Lignes Telegraph Telephon Traversee etanche pour fibres optiques
NL8403692A (nl) * 1984-12-05 1986-07-01 Philips Nv Samenstel bevattende een in een wand bevestigde lichtgeleidende vezel.
FR2655739B1 (fr) * 1989-12-13 1992-01-24 Cit Alcatel Dispositif d'etancheite longitudinale pour l'ame d'un cable optique.
FR2814550B1 (fr) * 2000-09-25 2002-12-06 Schlumberger Services Petrol Traversee optique
EP2355283A1 (en) 2010-01-29 2011-08-10 Tyco Electronics Raychem BVBA Cable sealing device, cable termination and attaching device
CA2833734C (en) * 2011-04-18 2019-04-02 Ted Lichoulas Tube seal
JP5996522B2 (ja) * 2013-12-25 2016-09-21 エスペック株式会社 箱状装置用配線取り付け装置

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR849268A (fr) * 1938-07-28 1939-11-17 Boîte de raccordement étanche pour câbles électriques de section méplate à conducteurs multiples
GB769452A (en) * 1954-08-19 1957-03-06 Sangamo Weston Improvements in the production of hermetically sealed joints in electrical plugs and the like devices
GB889080A (en) * 1960-04-27 1962-02-07 Reginald Harry Gardner Method of insulating an electrical connection
GB916224A (en) * 1959-11-07 1963-01-23 Simplex Electric Co Ltd Improvements in and relating to flameproof electrical equipment
US3104277A (en) * 1959-05-02 1963-09-17 Comp Generale Electricite Fluid-tight lead-out device for an electric conductor
US3290427A (en) * 1965-02-26 1966-12-06 Ralph M Newcomer Deep sea high pressure cable entry
FR1473304A (fr) * 1966-02-02 1967-03-17 Passage étanche démontable pour câbles multi-conducteurs
US3739076A (en) * 1972-04-17 1973-06-12 L Schwartz Electrical cable terminating and grounding connector
US3781456A (en) * 1972-08-01 1973-12-25 Atlantic Richfield Co Pressure sealed cable packoff and method for making and using same
US4015329A (en) * 1974-12-20 1977-04-05 John Blundell Hutchison Termination of electric cables
US4103136A (en) * 1977-05-17 1978-07-25 Allen-Bradley Company Switch housing with cable seal
US4152538A (en) * 1977-10-19 1979-05-01 Western Electric Company, Incorporated Pressurized cable termination seal and methods of making

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1119926A (en) * 1965-12-01 1968-07-17 Winsco Instr & Controls Co Inc Pressure sealed electrical connecting device
US3781453A (en) * 1972-04-12 1973-12-25 Gen Electric Electrical penetration assembly

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR849268A (fr) * 1938-07-28 1939-11-17 Boîte de raccordement étanche pour câbles électriques de section méplate à conducteurs multiples
GB769452A (en) * 1954-08-19 1957-03-06 Sangamo Weston Improvements in the production of hermetically sealed joints in electrical plugs and the like devices
US3104277A (en) * 1959-05-02 1963-09-17 Comp Generale Electricite Fluid-tight lead-out device for an electric conductor
GB916224A (en) * 1959-11-07 1963-01-23 Simplex Electric Co Ltd Improvements in and relating to flameproof electrical equipment
GB889080A (en) * 1960-04-27 1962-02-07 Reginald Harry Gardner Method of insulating an electrical connection
US3290427A (en) * 1965-02-26 1966-12-06 Ralph M Newcomer Deep sea high pressure cable entry
FR1473304A (fr) * 1966-02-02 1967-03-17 Passage étanche démontable pour câbles multi-conducteurs
US3739076A (en) * 1972-04-17 1973-06-12 L Schwartz Electrical cable terminating and grounding connector
US3781456A (en) * 1972-08-01 1973-12-25 Atlantic Richfield Co Pressure sealed cable packoff and method for making and using same
US4015329A (en) * 1974-12-20 1977-04-05 John Blundell Hutchison Termination of electric cables
US4103136A (en) * 1977-05-17 1978-07-25 Allen-Bradley Company Switch housing with cable seal
US4152538A (en) * 1977-10-19 1979-05-01 Western Electric Company, Incorporated Pressurized cable termination seal and methods of making

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4593175A (en) * 1985-02-13 1986-06-03 Ppg Industries, Inc. Electrical conduit with integral moisture-vapor barrier
US4761051A (en) * 1986-02-28 1988-08-02 Alcatel Cit Longitudinal sealing device for an optical cable core
US4819971A (en) * 1987-09-02 1989-04-11 Newport News Shipbuilding And Dry Dock Company Pressure vessel penetration fitting
US5301959A (en) * 1989-10-04 1994-04-12 British Telecommunications Public Limited Company Sealing gland
US5861577A (en) * 1992-06-05 1999-01-19 Hitachi Construction Machinery Co., Ltd. Seal structure for member-passing-through hole bored in metal partition member
US5525759A (en) * 1994-04-19 1996-06-11 Salzman; Phil M. Pin-shaped feedthrough
USRE36592E (en) * 1994-07-01 2000-02-29 Siecor Corporation Optical receiver stub fitting
US6305975B1 (en) * 2000-10-12 2001-10-23 Bear Instruments, Inc. Electrical connector feedthrough to low pressure chamber
US7355130B2 (en) 2004-04-09 2008-04-08 Siemens Information And Communication Networks, Inc. Cable sealing device
US20050227535A1 (en) * 2004-04-09 2005-10-13 Siemens Information And Communication Networks, Inc. Cable sealing device
US20070204531A1 (en) * 2006-03-03 2007-09-06 Engineered Glass Products, Llc Heated insulating glass panel with a fitting
US7805896B2 (en) * 2006-03-03 2010-10-05 Engineered Glass Products, Llc Heated insulating glass panel with a fitting
US20100325891A1 (en) * 2006-03-03 2010-12-30 Engineered Glass Products, Llp Heated insulating glass panel with a fitting
US8215007B2 (en) 2006-03-03 2012-07-10 Engineered Glass Products, Llc Method of assembling a heated insulating glass panel with a fitting
CN102823097A (zh) * 2010-01-29 2012-12-12 泰科电子瑞侃有限公司 线缆密封保持设备
CN102823097B (zh) * 2010-01-29 2016-07-13 泰科电子瑞侃有限公司 线缆密封保持设备
US20120112103A1 (en) * 2010-11-09 2012-05-10 Hamilton Sundstrand Corporation Seal assembly for metering valve
CN102466075A (zh) * 2010-11-09 2012-05-23 精密工程控制有限公司 用于计量阀的密封组件
CN102466075B (zh) * 2010-11-09 2016-12-14 精密工程控制有限公司 用于计量阀的密封组件
CN109428215A (zh) * 2017-08-30 2019-03-05 中国航发商用航空发动机有限责任公司 一种导线转接导管
CN109428215B (zh) * 2017-08-30 2020-07-28 中国航发商用航空发动机有限责任公司 一种导线转接导管

Also Published As

Publication number Publication date
GB2030011A (en) 1980-03-26
JPS5558716A (en) 1980-05-01
FR2435845B1 (ja) 1983-06-17
JPS5812807B2 (ja) 1983-03-10
FR2435845A1 (fr) 1980-04-04

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STCF Information on status: patent grant

Free format text: PATENTED CASE

AS Assignment

Owner name: STC PLC, 10 MALTRAVERS STREET, LONDON, WC2R 3HA, E

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:INTERNATIONAL STANDARD ELECTRIC CORPORATION, A DE CORP.;REEL/FRAME:004761/0721

Effective date: 19870423

Owner name: STC PLC,ENGLAND

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:INTERNATIONAL STANDARD ELECTRIC CORPORATION, A DE CORP.;REEL/FRAME:004761/0721

Effective date: 19870423